The salary trajectory of a Client Service Advisor ranges between locations and employers. The salary starts at £23,414 per year (estimate) and goes up to £46,908 per year (estimate) for the highest level of seniority.
The estimated average salary for a Client Service Advisor at Aon is £74,691 per year or £36 per hour, but some professionals have reported earning up to roughly £117,285 per year (90th percentile). The typical pay range is between £59,306 (25th percentile) and £94,985 (75th percentile) annually. This is based on 62 salaries submitted by Aon Client Service Advisor professionals on Glassdoor, as of Jun 2026.